Apparatus for selecting the release point in a ninety-degree sweepout for a glass forming machine

ABSTRACT

Apparatus for selecting the point in the arc of movement of glass containers being moved by a ninety-degree sweepout mechanism at which the containers are released to a removal conveyor. A ninety-degree sweepout mechanism moves newly formed glass container from a forming machine dead plate to a removal conveyor. The containers are engaged by fingers while on the dead plate, and are pushed through an arc of about ninety degrees to a removal conveyor where the fingers retract to allow the containers to be removed. In order to select the exact point in the arc of movement at which the fingers retract, a rotatable timing disk is inserted between a fixed housing and a rotatable base plate which carries the finger extending and retracting mechanism. When the sweepout mechanism is in position to extend the fingers to engage the containers on the dead plate, a fixed opening in the housing is connected to passageways in the base plate to introduce a working fluid to the finger extending mechanism. The timing kirk is cut away to avoid interference with this connection. When the base plate is rotated to move the containers onto the removal conveyor, a second set of passageways in the base plate are connected to an opening in a spacer block carried by the timing disk. This allows the operating fluid to be introduced to the finger operating mechanism to retract the fingers. The spacer block opening receives operating fluid from an elongated slot in a fixed valve member in the housing. By moving the position of the timing disk relative to the slot, the position at which the spacer block and the passageways in the base plate are in alignment may be changed. Thus, the point in the arc of travel of the containers at which the containers are released to the removal conveyor can be adjusted.

March 5, 1974 J l. PERRY 3,795,503

APPARATUS FOR SELECTING THE RELEASE POINT IN A NINETY'DEGREE SWEEPOUT FOR A GLASS FORMING MACHINE 2 Sheets-Sheet 1 Filed Nov. 20, 1972 March 5, 1974 J. I. PERRY 3,795,503

APPARATUS FOR SELECTING THE RELEASE POINT IN A NINETY-DEGREE SWEEPOUT FOR A GLASS FORMING MACHINE Filed Nov. 20, 1972 2 SheetsSheet 2 Illllll United States Patent O 12 Claims ABSTRACT OF THE DISCLOSURE Apparatus for selecting the point in the arc of movement of glass containers being moved by a ninety-degree sweepout mechanism at which the containers are released to a removal conveyor. A ninety-degree sweepout mechanism moves newly formed glass container from a forming machine dead plate to a removal conveyor. The containers are engaged by fingers while on the dead plate, and are pushed through an arc of about ninety degrees to a removal conveyor where the fingers retract to allow the containers to be removed. In order to select the exact point in the arc of movement at which the fingers retract, a rotatable timing disk is inserted between a fixed housing and a rotatable base plate which carries the finger extending and retracting mechanism. When the sweepout mechanism is in position to extend the fingers to engage the containers on the dead plate, a fixed opening in the housing is connected to passageways in the base plate to introduce a working fluid to the finger extending mechanism. The timing disk is cut away to avoid interference with this connection. When the base plate is rotated to move the containers onto the removal conveyor, a second set of passageways in the base plate are connected to an opening in a spacer block carried by the timing disk. This allows the operating fluid to be introduced to the finger operating mechanism to retract the fingers. The spacer block opening receives operating fluid from an elongated slot in a fixed valve member in the housing. By moving the position of the timing disk relative to the slot, the position at which the spacer block and the passageways in the base plate are in alignment may be changed. Thus, the point in the arc of travel of the containers at which the containers are released to the removal conveyor can be adjusted.

BACKGROUND OF THE INVENTION This invention generally relates to glass container forming machines. More particularly, this invention relates to ninety-degree sweepout mechanisms for such machines. Most specifically, this invention relates to apparatus for allowing the selection of the point in the arc of travel of a ninety-degree sweepout mechanism at which the glass container is released.

Ninety-degree sweepout mechanisms for glass forming machines are well known in the art as illustrated by US. Pats. 3,249,200; 3,559,537 and 3,595,365. None of the prior art mechanisms were provided with any means for allowing selection of the release point of the container on the removal conveyor. That is, the release point was fixed and occurred as a result of the alignment of a fixed port in the main housing and a port on the oscillating base plate which carried the fluid motor for extending and retracting the bottle engaging fingers. However, it was often desirable to adjust this point or select a different point in order to fine tune the operation. U.S. Pat. 3,595,365 teaches (FIG. 5) a valving arrangement for adjusting the time at which the finger retraction occurred, but this still did not allow selection of the point in the arc of travel of the container at which finger retraction took place. I have solved this deficiency in the prior art by my inven- 'ice tion of an apparatus which provides a means for selecting the point in the arc of movement of the containers at which the finger members will retract to release the containers onto the removal conveyor.

SUMMARY OF THE INVENTION My invention is an improvement in a ninety-degree sweepout mechanism for a glass container forming machine of the type wherein a reciprocating fluid motor extends container engaging fingers over a machine dead plate to engage newly formed containers. The fluid motor is then rotated through an arc of substantially ninety degrees to move the containers onto a removal conveyor. The container engaging fingers are then retracted to release the containers On the removal conveyor. The fluid motor is attached to a rotatable base plate which is attached to and moves with a main drive shaft rotatably mounted in a housing. Passageways within the base plate conduct operating fluid to the fluid motor when they are in communication with a first fixed duct means in the housing or a second fixed duct means in the housing, each of the fixed duct means being connected to a source of operating fluid. The improvement in the ninety-degree sweepout mechanism so described comprises control means positioned intermediate the base plate and the housing for selecting the point at which the second fixed duct means and the passageways in the base plate are in communication at the container releasing position to thereby control the position in the arc of movement of the containers over the removal conveyor at which the container engaging fingers will retract to release the containers on the removal conveyor and for maintaining a fixed point of communication between the first fixed duct means and the passageways in the base plate at a container engaging position of the machine dead plate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded, perspective view of the apparatus of the present invention; and

FIG. 2 is a side, elevational view, partially in cross section, of the apparatus of the present invention.

DETAILED DESCRIPTION OF THE DRAWINGS The exploded view of FIG. 1 shows the apparatus of my invention and a portion of a ninety-degree sweepout for a glass container forming machine. The entire ninetydegree sweepout mechanism may be seen in US. Pat. 3,559,537, the teachings of which are hereby incorporated by reference. In particular, the cited patent should be referred to for the lower drive mechanism for the ninetydegree sweepout and for the upper head assembly, which illustrates the porting of the air passages controlled by the apparatus of the present invention. The entire ninetydegree sweepout mechanism is mounted in a housing 16. The housing 10 is an elongated, substantially cylindrical member which serves as a support for a main drive shaft 12. An extension 14 integrally connected to the housing 10 serves to carry a bracket (not shown) which allows attachment of the housing 10 to the base of a glass forming machine. Two bosses, 16 and 17 extend outwardly from the housing 10 adjacent to the upper portion of the housing It) separated by approximately ninety degrees. The bosses 16 and 17 allow introduction of air into a rotatable base plate 18, which is attached to the main drive shaft 12 and is oscillated by the main drive shaft 12. A hole 19 is drilled into the boss 17 and is threaded to allow connection of a fluid pressure line (not shown) to the hole 19. The hole 19 connects with a cross passageway 20 (shown in dotted lines) which in turn communicates with a substantially cylindrical chamber 22 formed within the boss 17 and extending vertically upward and opening at the upper surface of the boss 17 The chamber 22 is likewise shown in dotted lines in FIG. 1. An annular sleeve member 24 is sized to slidingly engage the chamber 22. A spring 26 is inserted in the chamber 22 before the sleeve member 24 is inserted and provides a net upward force on the sleeve member 24. When the entire unit is assembled, the spring 26 forces the annular sleeve member 24 to bear against the bottom of the rotatable base plate 18. In the apparatus of the prior art, the boss 16 was identical to the boss 17. However, for the purposes of this invention, the boss 16 has been modified by cutting a slot portion 28, substantially tangent to the housing 10, completely through the boss 16. A drilled and tapped opening 30 in the extension portion 14 is connected to a cylindrical chamber 32 formed in the boss 16 by a drilled passageway 33. Both the chamber 32 and the passageway 33 are shown in dotted lines in FIG. 1. A T-shaped valve member 34 is adapted to fit into the chamber 32 and the slot portion 28. A stem portion 36 of the valve member 34 is a substantially cylindrical sleeve member with an axial opening extending completely therethrough. The stem portion is sized to engage the chamber 32 and the slot portion 28. A stem portion 36 of integrally connected to a cross arm portion 38 of the valve member 34. The cross arm portion 38 fits into the slot 28 formed in the boss 16. The upper surface of the cross arm portion 38 has an elongated slot 40 formed therein. The elongated slot is substantially symmetrical about the center line of the stem portion 36 and communicates with the opening through the stem portion 36. A spring 42 .is inserted into the cylindrical chamber 32 before the stem portion 36 is inserted and thus provides a force urging the valve member 34 upwardly against a spacer block 44. The spacer block 44 has a central opening 46 drilled completely through it to allow communication with the slot 48 in the valve member 34. The spacer block 44 is restrained Within an elongated slot 48 formed in an adjustable valve timing disk 50. The spacer block 44 is preferably made from a resilient material such as Teflon and is of an appreciably greater thickness than is the timing disk 50. The spacer block 44 is frictionally held in place in the slot 48 and extends on either side of the upper and the lower surface of the timing disk 50. The timing disk 50 itself is of a generally circular shape with a substantially rectangular tab portion 52 extending radially outwardly approximately 180 opposed from the slot 48. The majority of the central portion of the timing disk 50 is removed to form a large central opening 54 which allows the timing disk 50 to be slipped over the main drive shaft 12 for assembly. Extending radially outwardly from the periphery of the central opening 54 is a cutout portion 56. The cutout portion 56 is approximately ninety degrees separated from the slot 48 and is of a circumferential extent somewhat greater than the circumferential arc of extent of the boss 17. The purpose of the cutout portion 56 is to allow the sleeve member 24 to bypass contact with the timing disk 50 and make contact with the lower surface at the rotatable base plate 18. A manifold black 58 is normally secured to the housing 10 with a bolt 59. When the manifold block 58 is assembled to the housing 10, the upper surface of the manifold block 58 is in substantially the same horizontal plane as the upper surfaces of the boss 17. A threaded hole 60 is provided in the upper surface of the manifold block 58. A threaded bolt 62 extends through an arcuate slot 64 formed in the tab portion 52 of the timing disk 50 and allows mounting of the tab portion 52 to the upper surface of the manifold block 58 by engagement of the bolt 62 with the hole 60. Finally, a guide means, in the form of a raised locking ring 61, is provided for preventing radial movement of the timing disk 50 toward or away from the main shaft 12 during rotation of the timing disk 50. The locking ring 61 is formed on the upper surface of the housing 10 and faces the base plate 18. The locking ring 61 is substantially concentric with the drive shaft 12 and has a diameter slightly less than the diameter of the central opening 54 in the timing disk 50. This allows the timing disk 50 to slip over the locking ring 61 and thereafter prevent movement of the timing disk 50 toward or away from the man shaft 12. This results, since the timing disk 50 will hit the locking ring 61 if any radial movement tends to take place during the circumferential rotation of the timing disk 50. It will be noted that a portion of the locking ring 61 is cut off as a result of the slot portion 28 formed in the boss 16. However, this has no effect on the operation of the locking ring 61 to prevent radial or diametrical movement of the timing disk 50.

The cross-sectional view of FIG. 2 shows the compo nents of FIG. 1 in their assembled configuration. While it is not evident from the cross-sectional view of FIG. 2, the sleeve member 24 extends through the cutout portion 56 and bears against the lower surface of the rotatable base plate 18. It may be seen from FIG. 2 that the spacer block 44 likewise bears against the lower surface of the rotatable base plate 18. The spacer block 44 is held against the lower surface of the base plate 18 by means of engagement with the valve member 34 and its associated spring 42. It may be seen that the interior of the valve member 34 is slightly undercut to allow insertion of the spring 42. Also visible in FIG. 2 is a main bearing 66 for the drive shaft 12. It will be noted that the manifold block 58 contains a passageway which allows introduction of lubricant and cooling air into the bearing 66. It may be seen that the rotatable base plate 18 is engaged with the drive shaft 12 and as the drive shaft 12 is oscillated, the base plate 18 follows this motion. The timing disk 50 is fixed in position by the engagement of the bolt 62 with the hole 60. However, with reference again to FIG. 1, it should be apparent that if the bolt 62 were loosened, the timing disk 50 could be rotated somewhat with respect to the base plate 18 or, more properly, the housing 10. It is this ability to shift or adjust the timing disk 50 with respect to the housing 10 which allows adjustment of the point in the arc of movement of the bottles at which the bottle engaging fingers will be retracted. The base plate 18 has drilled near its peripheral region two passages 68 and 69. The passages 68 and 69 are open at their lower ends on the underside of the rotatable base plate 18 and at their upper ends connected with a valve body 70 as shown in US. Pat. 3,559,537. As ex plained in the aforementioned patent, the valve body 70 serves to control the cycling of a fluid motor 72. An extensible operating rod 74 of the fluid motor 72 serves to extend and retract bottle or container engaging fingers 76. Both the valve block 70 and the fluid motor 72 are attached to and move with the rotatable base plate 18. It should be realized that the valve block 70 is not an absolute necessity for proper functioning of this device. That is, the aforementioned patent specifically teaches that the valve body 70 is used primarily to allow righthand or left-hand operation of the same mechanism. If the valve body 70 were to be eliminated, passageways could be formed directly in the base plate 18 which would connect with the fluid motor 72 directly, thus eliminating the necessity of the valve body 70. The positioning of the lower openings of the passages 68 and 69 is such that as the rotatable base plate 18 rotates, the passage 68 will be in contact with the opening of the sleeve member 24 and subsequently, the passage 69 will be in I communication with the hole 46 through the spacer block 44. When the passage 68 is in communication with the sleeve member 24, the fluid motor 72 which controls the extension and retraction of the bottle engaging fingers 76 will be extended to engage bottles. When the rotatable base plate is rotated by the mechanism, the passage 68 will be moved from communication with the sleeve member 24 and the passage 69 will come into communication With the hole 46. This then will allow air to be introduced through the porting system of the mechanism to retract the bottle engaging fingers 76 and thus allow the bottles to be removed from the glass forming machine section. Thus it should be realized that the basic valving function to control the extension and retraction of the bottle engaging fingers 76 is provided by the two passages 68 and 69 and, as previously noted, the valve body 70 is used only to allow either right-hand or left-hand operation of the same mechanism.

As an aid to further understanding, it may be useful at this point to consider the individual components in more functional terms to better understand the interrelation of the parts thus described. The passages 68 and 69 may be considered to be part of passageways within the base plate 18 which conduct operating fluid to the fluid motor 72. The boss 17, its chamber 22 and connecting passage 20 may be considered to be a first fixed duct means in the housing which is positioned at the container engaging position of the base plate 18 to communicate with the passageway within the base plate 18 to allow operating fluid to enter the fluid motor 72. The boss 16, its chamber 32 and associated passageways 33 may be considered to be a second fixed duct means at the container releasing position which communicates with the passageways within the rotatable base plate 18 to again conduct fluid to the fluid motor 72, in this case to retract the bottle engaging fingers 76. The sleeve member 24 and its associated spring 26 act as a means for connecting the passage 68 to the first fixed duct means when the fluid motor 72 is facing the machine dead plate. The spacer block 44 may be considered to be an insert means carried by the timing disk 50 for connecting the timing disk 50 to the passage 69 when the fluid motor 72 is generally facing the removal conveyor. The valve member 34 and its associated spring 42 can be considered to be a means for connecting the insert means to the second fixed duct means when the fluid motor is generally facing the removal conveyor. Finally, the tab 52 on the timing disk 50, the arcuate slot 64 in the tab 52, the manifold block 58, its attaching bolt 59, its threaded hole 60, and the bolt 62 securing the timing disk 50 to the manifold block 58 may, in the broadest sense, be considered to be a means for rotating the timing disk 50 relative to the housing 10 and the first and second fixed duct means to adjust the position at which the insert means and the second passage in the base plate 18 will be in communication, to thereby select a point in the arc of movement of the base plate 18 at which the container engaging fingers 76 will be retracted.

With both FIGS. 1 and 2 in mind, the operation of this apparatus is as follows:

As newly formed containers are delivered to the glass forming machine dead plate, the apparatus is set in such a position that the passage 68 communicates with the sleeve member 24', thus allowing operating fluid to be admitted to the fluid motor 72 to cause extension of the bottle engaging fingers 76. At the proper time in the cycle, controlled by the lower portion of the sweepout mechanism, the rotatable base plate !18 is rotated approximately ninety degrees to bring the glass containers onto a removal conveyor. At this point, the passage 69 is in communication with the hole 46 in the spacer block 44, thereby allowing operating fluid to be admitted to the other end of the fluid motor 72, thus retracting the bottle engaging fingers 76. It should be quite apparent that while operating fluid may be admitted to the hole 46 over rather a large span of rotation due to its communication with the slot portion 40 of the valve member 34, this operating fluid will not be admitted into the passage 69 until the passage 69 is in alignment with the hole 46. The hole 46 and the diameter of the passage 69 are of substantially the same diameter. Therefore, shifting the timing disk 50 by loosening the bolt 62 and rotating the timing disk 50 along the arcuate slot 64 will allow adjustment of the position the rotatable base plate 18 has assumed at the time the passage 69 mates with the hole 46. Thus, it is possible to adjust the precise position at which bottles are released to the removal conveyor independently of the total rotational stroke of the rotatable base plate 18.

This mechanism, while generally referred to as a ninety-degree sweepout, is actually capable of the sweeping motion of slightly more or less than ninety degrees. Ability to change slightly the actual degree of rotation has proven necessary to take into account the differences in mechanical movement of the various mechanisms and of the frictional engaging properties of the removal conveyor with the glass containers themselves. As pointed out previously, the prior art devices of this type used a fixed position at which the bottle engaging fingers 76 retracted, very similar to the fixed assembly which is used to control the point at which the bottle engaging fingers 76 are extended over the machine dead plate. That is, the boss 16 would have had an assembly substantially identical to the sleeve member 24 and its associated spring 26. Thus, it was not possible to adjust the position in the rotational movement of the base plate 18 at which the bottle engaging fingers 76 retracted. The device here shown allows one to adjust, within a range of approximately thirteen degrees, the point at which the bottle engaging fingers 76 will retract. This allows a fine tuning of each ninetydegree sweepout mechanism to account for the peculiarities of each individual glass forming machine section. My invention substantially improves the utilization of the sweep arc adjustment capabilities by relating the release point to the sweep arc; in the prior art, the release point was always fixed, and thus adjusting the total sweep arc did not change the point of release relative to the sweep arc. Thus, this invention provides a control means positioned intermediate the rotatable base plate 18 and the housing 10 for selecting the point at which the fixed duct means and the passageways in the rotatable base plate 18 are in communication at the container releasing position to thereby control the position in the arc of movement of the containers over the removal conveyor at which the fingers 76 retract to release the containers on the removal conveyor and for maintaining a fixed point of communication between said first fixed duct means and said passageways at a container engaging position over said machine dead plate.

What I claim is:

1. In a ninety-degree sweepout mechanism for a glass container forming machine wherein a reciprocating fluid motor extends container engaging fingers over a machine dead plate to engage newly formed containers, wherein said fluid motor is rotated through an arc of substantially ninety degrees to move said containers onto a removal conveyor, wherein the container engaging fingers retract to release the containers on the removal conveyor, wherein the fluid motor is attached to a rotatable base plate which is attached to and moves with a main drive shaft rotatably mounted in a housing, and wherein passageways within said rotatable base plate conduct operating fluid to the fluid motor when in communication with a first fixed duct means in said housing or a second fixed duct means in said housing, each of said fixed duct means being connected to a source of operating fluid, the improvement in said ninety-degree sweepout mechanism which comprises: control means positioned intermediate said rotatable base plate and said housing for selecting the point at which said second fixed duct means and said passageways in said rotatable base plate are in communication at a container releasing position to thereby control the position in the arc of movement of said containers over said removal conveyor at which said container engaging fingers retract to release said containers on said removal conveyor and for maintaining a fixed point of communication between said first fixed duct means and said passageways in said base plate at a container engaging position over said machine dead plate.

2. The apparatus of claim 1, wherein said control means includes an adjustable valve timing disk positioned between said rotatable base plate and said housing for adjusting the point of communication of said passageways and said second fixed duct means, said timing disk having a central opening to allow passage of said main shaft therethrough.

3. The apparatus of claim 2 wherein said passageways within said rotatable base plate includes a first passage open at the lower end of said base plate facing said housing, said first passage being connected to said fluid motor on the side of said fluid motor acting to extend said container engaging fingers; and wherein said control means further includes means for connecting said first passage to said first fixed duct means when said fluid motor is facing said dead plate.

4. The apparatus of claim 3, wherein said passageways within said rotatable base plate includes a second passage open at the lower end of said base plate facing said housing, said second passage being connected to said fluid motor on the side of said fluid motor acting to retract said container engaging fingers and being spaced apart from said first passageway; and wherein said control means further includes insert means carried by said timing disk for connecting said timing disk to said second passage when said fluid motor is generally facing said removal conveyor.

5. The apparatus of claim 4, wherein said control means further includes means for connecting said insert means to said second fixed duct means when said fluid motor is generally facing said removal conveyor.

6. The apparatus of claim 5, wherein said control means further includes means for rotating said adjustable valve timing disk relative to said housing and said fixed duct means to adjust the position at which said insert means and said second passage in said base plate will be in communication, thereby selecting the point in the arc of movement of said base plate at which said container engaging fingers will be retracted.

7. The apparatus of claim 3, wherein said adjustable valve timing disk further includes a cutout portion extending radially outwardly from the periphery of said centralopening over said first fixed duct means and extending circumferentially through an are greater than the circumferential arc of extent of said first fixed duct means, wherein said first fixed duct means includes a substantially cylindrical chamber formed therein open at its upper end facing said base plate and connected to said source of operating fluid, and wherein said means for connecting said first fixed duct means to said first passage when said fluid motor is facing said dead plate comprises: an annular sleeve member in sliding engagement in said chamber in said first fixed duct means; and a spring within said chamber in said first fixed duct means under said sleeve member for urging said sleeve member upward through said cutout portion in said valve timing disk into contact With said rotatable base plate.

8. The apparatus of claim 4, wherein said valve timing disk further includes an elongated slot extending through said valve timing disk in substantial alignment with said second fixed duct means, and wherein said insert means comprises: a spacer block shaped to fit said elongated slot, said spacer block being of sufiicient thickness to extend above and below the plane of said timing disk, said spacer block being formed with a single opening of approximately the same diameter as said second passage in said rotatable base plate and extending completely through said spacer block.

9. The apparatus of claim 5, wherein said second fixed duct means further includes a slot portion extending through an upper surface of said second fixed duct means facing said base plate, wherein said second fixed duct means includes a substantially cylindrical chamber formed therein communicating with said slot portion and connected to said source of operating fluid, and wherein said means for connecting said insert means to said second fixed duct means when said fluid motor is generally facing said removal conveyor comprises: a substantially T-shaped valve member having a stem portion and a cross arm portion, said stem portion being in sliding engagement in said chamber in said second fixed duct means and having an axial opening extending completely therethrough, said cross arm portion having an elongated slot communicating with said axial opening in said stem portion and open to the upper surface of said cross arm portion, said cross arm portion being engaged in said slot portion of said second fixed duct means; and a spring within said chamber in said second fixed duct means under said stem portion for urging said valve member into engagement with said spacer block and urging said spacer block into engagement with said rotatable base plate.

10. The apparatus of claim 6, wherein said means for rotating said adjustable valve timing disk comprises: a tab portion attached to said timing disk and extending radially outwardly from the periphery of said timing disk, said tab portion having an arcuate slot formed therein; a manifold block attached to said housing in a position generally under said tab portion, said manifold block having a threaded hole formed in the upper surface thereof in alignment with said arcuate slot in said tab portion; and a threaded bolt extending through said arcuate slot in said tab portion and engaged in said threaded hole in said manifold block whereby said timing disk will be held in a fixed position when said bolt is tight and said timing disk may be rotated when said bolt is loosened to thereby move said insert means to adjust the position at which said insert means and said second passage will be in communication.

11. The apparatus of claim 2, further including guide means for preventing radial movement of said timing disk toward or away from said main shaft during rotation of said timing disk.

12. The apparatus of claim 11, wherein said guide means comprises a raised locking ring formed on the upper surface of said housing, facing said base plate, and substantially concentric with said drive shaft, the diameter of said locking ring being slightly less than the diameter of said central opening in said timing disk to allow said timing disk to slip over said locking ring and thereafter prevent movement of said timing disk toward or away from said main shaft.

References Cited UNITED STATES PATENTS 1,753,655 4/1930 Hiller 65260 2,677,919 5/1954 Worrest 65348 3,595,365 7/1971 Faure 198-24 ARTHUR D. KELLOGG, Primary Examiner US. Cl. X.R.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,795,503 Dated March 5, 1974 Inventor(s) Jack 1- Perry It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Col. 1, line 16, change "container" to --containers-. Col. 3, line 22, delete "and the slot portion 28. A stem portion 36 of" and insert --in a sliding manner. The stem portion 36 is--.

Signed and sealed this 2nd day of July 1974,-

(SEAL) Y Attest:

EHWARD M.FLETCHER,JR. C.MARSHALL DANN Attestlng Officer Commissioner of Patents -'O RM PC4050 (10-69) I USCOMM-DC 60376-P6B fir u.S. GOVERNMENT PRINTING OFFICE: I9" 0-366-334. 

